Thanks to this world map that shows the density of people with the surname Quanh in different countries, you can get an idea not only of the popularity of the surname Quanh in each country but also of the different migrations of people surnamed Quanh.
Globalization can make the surname Quanh be found in almost every country around the globe, but being able to see the density of people residing in a country with the surname Quanh greatly aids all those who seek a deeper knowledge about the surname Quanh.